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Nautiluses are members of the cephalopod family.  They have survived several severe extinction events that destroyed most other sea life.  A possible reason for the longevity of the nautilus clan is an ability to enter a type of "hibernation" life mode that can bridge long periods of poor environmental conditions.  Nautiluses are often confused with Ammonites- but look closely and you'll notice the patterns on the insides and outsides are actually very different.

  • Whole Nautilus - FNAU006
    Whole Nautilus - FNAU006
    This is one of our larger size Madagascar Nautiluses, weighing at almost a pound and a half. The coloring in this fossil is darker than the smaller ones.  It is a more rich, brown color.  How amazing it is to...
  • Whole Nautilus - FNAU015
    Whole Nautilus - FNAU015
    This our larger size Madagascar Nautilus, weighing about 9 1/2 lbs! This fossil has most of it's original shell.  You can even see some red opalescence!  There are also some turitella imprints on the...
  • Whole Nautilus - FNAU016
    Whole Nautilus - FNAU016
    I love this Whole Nautilus!  This beauty is filled with yellow calcite!  There is a small area on this fossil that has a little bit of druze. (It's hard to see it in the photos - it is at the bottom near the...
  • Whole Nautilus - FNAU017
    Whole Nautilus - FNAU017
    This sweet little Whole Nautilus has golden honey hued calcite! How amazing it is to find fossils over millions of years old in such good shape!  Gotta love it! Nautiluses are often confused with Ammonites- but look...

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